Do they do things differently in TX? Every race I’ve been to either has a 4/5 field, a 3/4 field leaving the cat 5s to their own field, or a different pack for each category. Are there races where you have a choice? If so, I go for the Cat 4 only. This way you don't have to share the road with the first-time racers, but you don't have your ass handed to you cat 3 guys.